Andreas Huck, Frank Niedermeyer, Saharon Shelah. k-preserving sets in infinite graphs. Journal of Graph Theory, 18(4):413-426, 1994. [doi]
@article{HuckNS94,
title = {k-preserving sets in infinite graphs},
author = {Andreas Huck and Frank Niedermeyer and Saharon Shelah},
year = {1994},
doi = {10.1002/jgt.3190180411},
url = {http://dx.doi.org/10.1002/jgt.3190180411},
researchr = {https://researchr.org/publication/HuckNS94},
cites = {0},
citedby = {0},
journal = {Journal of Graph Theory},
volume = {18},
number = {4},
pages = {413-426},
}